“The Challenges of Smart City Implementation in Indonesia: Case Study of Sleman Regency, Special Region of Yogyakarta, Indonesia”, jgd, vol. 15, no. 1, pp. 1–18, Jan. 2019, Accessed: Jul. 29, 2026. Available: https://e-journal.uum.edu.my/index.php/jgd/article/view/13296